Badly tiled roof with the wrong tile spacing this is a good example of what goes wrong with tile spacing and batten spacing when it s not thought through.
First row of tile roof.
Set out the first second and all the rest of slates on a pitched roof.
The top row of tiles at the ridge is also made up of half tiles to give the next row down a double lap.
Proper layout of the tile and proper setting of the first few tiles will help ensure that the rest of the tile job goes down evenly.
Setting out up the roof gauge set the first batten at eaves to allow the tails of the eaves course tiles to overhang the fascia by 40 to 45mm ie.
The lowest row of tiles at the fascia board is made up of shorter tiles to provide the double lap for the first row of full ones the lower edges of these short tiles and the first row of full tiles should be the same.
Tiled roofs first replaced thatched roofs in ancient mesopotamia.
Just short of the centre of the gutter.
Position the first roll of underlayment at one side of the roof perpendicular to the lower edge the eave of the roof.
Continue this process to the 5th row then begin the same process as the first row beginning with a full shingle and a chalk mark.
Although house models from indus valley civilization show that the houses were flat roofed harappan sites such as alamgirpur dated 2600 2200 bce provide evidence of roof tiles.
The exposure on the first course of slates may be reduced by dropping the chalk line for the top of the second course of slates in order to increase the headlap on the starter course.
If it is a hip roof allow about a tab width to overhang onto the next section of roof at the hip to help strengthen the joint there.
Set the last batten at the ridge so that the ridge tiles will overlap the top course of tiles by at least 75mm.
As you roll out the underlay keep the bottom edge of the material aligned with the edge of the eave but above any metal or synthetic edging that may cover the borders of the eave.
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Repeat all of the way to the ridge.
1 measure the room where you re laying the tile.
The height distance up the roof of the starter slate must be at least 3 inches greater than the vertical exposure on the first course of slate.